Rotary valve



W. G. WILSON.

ROTARY VALVE.

APPLICATION FILED MAY 1 5; 19"!- Patented Dec. 7, 1920.

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fl zo v m I 8 J2 g r u I i I [I x v i INVEN TOR T tv'yle'eamlsolg vi; ATTORNEY W. 6. WILSON.

ROTARY VALVE.

APPLICATION FILED MAY 16, 1918.

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UNITED STATES WYLIE GEMMEL WILSON, OF NEW YORK, N. Y.

ROTARY VALVE.

Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed. May 16, 1918. Serial No. 234,878.

T 0 all whom it may concern:

Be it known that I, VVYLIE GEMMELWVIL- SON, a subject of the King of Great Britain, and a resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Rotary Valves, of which the following is a speclfication.

This invention is a valve of the butterfly standpoint, is to provide a valve sealing member, of minimum size, which will permit of the inlet and outlet casing ports, and

connecting passage, being of a cross sec-V tional area .t least equal to the cross sec-- tional area of the inlet and outlet pipes, respectively, thereby providing a free, unobstructed passage for the fluid through the casing at the maximum capacity of said pipes.

From a structural standpoint, speaking generally, the invention embodies a valve wherein the medial line of the sealing member is inclined, or eccentric, with reference to the medial line of the inlet and outlet ports of the casing, and, more specifically, a floating sealing member, capable of performing the function specified, which is free to adjust itself and yet is automatically kept in contact with its seat by springs.

Some of the advantages of the invention may be realized, however, without necessa-' rily providing an entirely unobstructed valve passage, and without necessarily having the medial line of the sealing member eccentric to the medial line passing through the valve ports Features of the invention, other than those adverted to, will be apparent from the hereinafter detailed description, taken in conjunction with the accompanying drawings and appended claims. The drawings illustrate two different, and the preferred, practical embodiments of the invention, but these are to be understood as illustrative, only, and not exclusive of the different forms in which the invention may be given embodiment.

Referring to the drawings, Figure 1 is a plan view of the valve;

Fig. 2 is a longitudinal section, partly in elevation, on line 2-2 of Fig. 1, showing the valve in closed position;

F is a section on line 3-3 of Fig. 2, showing the sealing member in open and closed positions;

Fig. 4 is a transverse section on line 4 4 of Fig. 1, showing the valve in open posi tion;

Fig. 5 is a longitudinal section of a modifled form of the invention showing the valve in closed position; and

Fig. 6 is a section on line 6-6, showing thesealing member, in full lines, in closed posltion, andin dotted lines in open posi-- tron.

Referring. particularly to Figs. 1,2, 3 and -1 of the drawings, 8 is a valve casing having a cap or cover 9 secured thereto by bolts 10. The inlet pipe to the casing is designated 11, and the outlet flow or exit pipe 12, the said pipes being screw threaded, as usual, into the inlet and outlet ports, respectively, of the valve casing. The sealing element or member 13, in its preferred form, is cup-shaped, in longitudinal cross section, as shown in Fig. 2, and is provided on its face with an outwardly projecting annulus or ring 1 1, adapted, when the sealing member is in closed position, to tightly engage the valye seat 15, thereby shutting off communication between the inlet and outlet ports of the casing.

The peripheral wall 16 of sealing member 13 is made sufficiently thick'to permit of cir cumferentiallv positioned pockets 17 being formed therein. These pockets house coiled springs 18, under compression, and plungers 19, which plungers, when sealing member 13 occupies a closed position, are forced by the springs against the face 20 of the casing opposing that of the valve seat, therebyautomatically forcing the sealing member to its seat. r 3

' As clearly appears in Fig. 8, which shows the sealing member in open and closed positions, the medial line a/a 0f the sealing member 13, when in closed position is inclined with reference to the medial line or axis 1) of the conduitwhich it seals, see

Fig. 3, and, when the sealing member occu- 105 pics an open position, its medial line is at right angles to the medial line of the conduit. The lower portion of the sealing member is provided with a knob or knuckle 21, which is seated on an upstanding projection 22 in 1-10 the bottom of the valve casing, thereby forming the bearing on which the valve sealing member is partially rotated from closed-to open position, and vice versa.

The sealing member is provided with a head 23 which fits, disconnectedly, into a groove or channel 24 on the valve stem or post 25, so that when the valve stem is partially rotated, in one well known way or another, as by a valve handle or lever 26, the sealing member is synchronously operated. The upper portion of the valve stem is stepped, as shown, to receive valve handle 26, and the end of the stem is eccentrically mounted with reference to the axis of rotation of the valve.

It will be noted that the axial or medial line of valve handle 26 is positioned in a plane, typified by line c0, Fig. 3, inclined with respect to the plane within which the medial line of the sealing member is located, but that it is in the same plane as the axial or medial line of the valve casing ports, or pipes 11 and 12 connected therewith. This appears, also, from the legends Shut and Open indicated on Fig. 1. Valve stem 25 is also provided with a cored portion or socket 27 which houses a coiled spring 28, under tension, the function of which is, by its downward pressure, to keep the knob 21 of the sealing member properly seated on the projection or support 22. A packing ring 29 is inserted between the valve cap 9 and stem or post 25.

Referring now to the modified form of the invention illustrated in Figs. 4: and 5, the structure is substantially the same. as the form described so far as concerns all the structural features except the sealing member, and, accordingly, it. is deemed unnecessary to again describe them. Moreover the same reference numerals have been applied to-like parts in the two structures. The sealing member in this construction comprises two sets of faces each set disposed at right angles to the other set. One set indicated in Figs. 5 and 6 as 14 and 1 1 are semi-circular in form adapted to coiiperate with the valve seates 15 and 15. The other set designated in Fig. 6 as 1 1 and 14 are straight and cooperate with the intern'al cylindrical face 15 of the casing which serves as the valve seat for said faces 14?, the two sets of valve faces cooperating to form a complete seal for the port 12. It will be noted that the medial or axial line of sealing member 13 coincides with the medial line passing through the centers of the valve ports. In other words, the medial line of the sealing member is not inclined with reference to the direction of flow of fiuid'through the valve.

In Fig. 5 the sealing member is shown in closed position, and in Fig. 6 it is shown in closed osition in full lines and in open position 1n dotted lines. It will be observed that in the first form described, the sealing member, when in open position, is entirely out of the valve passage, whereas, in the form shown in Figs. 5 and 6, the sealing member, when in open position, partially obstructs the passage. Otherwise, the two forms are substantially the same.

In both forms. of the invention, the valve is of the floating type, being perfectly ing member, coupled with its relatively slight travel, renders the valve particularly economical and efiicient for its intended purposes.

It will be understood that parts of thestructure may be employed without necessarily using them all in conjunction, and that changes may be made in the specific structures described without departing from the spirit of the invention, the scope of which is commensurate with the appended claims.

- Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A valve of the character described embodying a substantially cylindrical valve chamber, inlet and outlet ducts communicating with the chamber off-center, a rotary valve, provided with a sealing face, loosely positioned within the chamber, means for rotating the valve from open to closed position and vice versa, and spring pressed plungers carried by the valve and protruding from the side thereof opposite its sealing face into engagement with the wall of the valve chamber for the purpose of forcing the sealing face of the valve into tight engagement with the interior wall of the chamber.

2. A valve of the character described, embodying a valve chamber, inlet and outlet ducts communicating therewith, a valve positioned in said chamber and provided on one side with a duct sealing portion and on its opposite side with protruding spring pressed plungers adapted to directly engage with the wall of the chamber to hold the sealing portion to a seat against the wall of the chamber, and means for rotating the valve for the purpose of controlling the flow of liquid through the ducts.

3. A valve of the character described, embodying a substantially cylindrical v'alve chamber, substantially alined inlet and outlet ducts communicating therewith off-center, a floating valve, provided with a sealing portion, positioned within the chamber and adapted for rotation to preclude passage of fluid through the ducts or to allow of unrestricted straight-through passage of liquid from the inlet to the outlet duct, means for so operating the valve, and resilient means, directly engaging the wall of the valve chamber and independently of the sealing portion, for forcing said sealing portion to a seat against the wall of the chamber.

4. A valve of the character described, embodying a substantially cylindrical valve chamber, a floating sealing member positioned for rotation therein and provided with a trunnion slidably engaging the end wall of the valve chamber, a spring for maintaining the trunnion in engagement with the end wall of the chamber, and means for rotating the sealing member, in combination with spring pressed plungers associated with the sealing face of the valve and engaging with the wall of the chamber at one side thereof for forcing the sealing face of the member to a tight seat against the wall of the chamber, at the other side thereof.

5. In a valve of the character described, a valve chamber, inlet and outlet ports communicating therewith, a floating sealing member within the valve chamber, springs associated with said member and operating to exert tension in a direction away from the,

substantially cylindrical valve chamber, substantially alined inlet and outlet ducts communicating with the chamber off-center, a floating sealing member within the valve chamber, means for rotating the sealing member into and out of sealing position, springs associated with said member and operating to exert tension in a direction away from the outlet duct, when the sealing member is in sealing position, and plungers actuated by the springs and engaging the wall of the chamber'on the inlet duct side thereof, whereby the springs, through the medium of the plungers, force the sealing member to its seat and preclude the flow of liquid through the outlet duct.

Signed by me at New York city, N. Y.,

this 15th day of May, 1918. P WYLIE GEMMEL WILSON. IVitnesses:

HARRY KRAUss, MARGARET VOGEL. 

